Home / 98,019.21-135,245.61-57,718.26

Finding the Fourth Proportional to 98,019.21, 135,245.61 and 57,718.26

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Solution

The fourth proportional to 98,019.21, 135,245.61 and 57,718.26 is: 79,638.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,019.21 : 135,245.61 = 57,718.26 : x
  2. Step 2: Convert to fraction form
    98,019.21/135,245.61 = 57,718.26/x
  3. Step 3: Cross multiply
    98,019.21x = 135,245.61 × 57,718.26
  4. Step 4: Simplify right side
    98,019.21x = 7,806,141,281.84
  5. Step 5: Solve for x
    x = 7,806,141,281.84/98,019.21
  6. Step 6: Final answer
    x = 79,638.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.